Computing machine



A.KOHON$KL COMPUT|NG MACHINL APPLICATION HLED APB-22' I9l3- RENEWED SEPT- 11. I920. 1 $117324. Patented May 30, 1922.

{SHEETS-SHEET I.

' mvzu TOR @WKWW 9 ATTORNEY A. KORONSK COMPUTING MACHINE. "memo" mm APR.22, 191a. nznzwco saw. 11. I920. 1,417,924.

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A. KOBONSKL- COMPUTING MACHINE. AP'PLICM'IOI] FILED APLZZ. l9l3- RENEWED SEPTIH, 1920. 1,417,924.

A. KORONSKI. COMPUTING mcnmt. APPLICATION FILED APR-22. 1913. RENEWED SEPT. ll I920. 1,417,924.. Patentd May 30,1922.

7 SHEETS-SHEET 4.

A. KORONSKI. Comruwms mcmus. APPLICATION FILED APR. 22. I9l3- RENEWED SE PT. HijZO.

Patented May 30', 1922 frsnrers-suzn s.

A. KORONSKI. COMPUTING MACHINE. APPLICATION man mi. 22. 1913. 1,417,924..

RENEWED SEPT-17' I920.

Patented May 30, 1922.

I SHEETS-SHEET 6.

A. KORONSKI. COMPUTING MACHINE. APPLICATION FILED APR. 22, I9I3. RENEWED SEPT. -11. I920.

Patented May 30, 1922.

I SHEETS-SHEET Z.

Imwim PATENT OFFICE.

mat xononsxx, or rumors, rmmvam OOKPUTIHG mom Application am April as, 1818;8eria1 No. name.

To allwhom z'tmay concern:

BB/lt known the I, Armor: Konoivsxi, a

fically, my invention relates to computing or adding achines of the key drive type and it aims tof'rovide an improved construction of m'echanrsmintermediate the keys and the aceumula wheels for actuating the latter, whereby the touch of said keys is very light and uniform; to provide an improvement in the means for from the accumulating wheels an amount accumulated thereon, that is, for returning the said wheels to'aero. ition; to provi e operation of the transfer or carrying over 80 mechanism for transferring or carrying over from a denominational co umn of lower to the adjacent column of hi or order, until after the completion ,of-t e,accumula:i;g movement of an accumulating .wheel ca by the depression of a key; to provide an improved, eiiicieut and simple means actin when a key has been only partially depms -.i. to lock the remaining keys in the column coutainingthe partially do r'key against actuation until after 511 key has been de pressed to its fullest extent andfor indicat- 1n when such an error has been committed; 111% also to provide improved means for returning the o rative parts of the machineto normal'position when, as a result of vibration and 1arring in handling 'or otherwise; said parts have assumed abnormal positions in which all of the keys of each column may be locked against movement in either direction.

Other objects of my invention will be" pointed out in the detailed description thereof which foilows or will be apparent from such description To these ends, my invention oomprehends the' construction and arrangement hereinspecification or Letters Eatent.

an improved 1, construction. of means for preventing the Patented May 30, 1922.

Renewed September 17, 1820. Serial Ho. 10,977.

after described and specifically pointed out in the cladilrgs and illustltlatehd m the aceompan m w in w in Figu e lis a ifi n 'tudinal sectional view of a computing ma ine embogiing m invention, the and view being en loo g toward the left and the o rative mechanism being shown in side ovation;

Figure'2 is an end view of a portion of such machine with certain parts shown in Fi re I omitted;

igure 3 is an end view of a portion of such machine lookin toward the-front, the outside casing of fire machine being removed; c

Figure 4 is a transverse section on the line H of Figure 1a Figure 5 is a horizontal sectional view showing means for locking the keys against operation;

Figure 6 is a horizontal sectional view showm a detail of the mechanism by means of whic the keys actuate certain parts of the operative mechanism; I

Fi re 7 ma horizontal sectional view on t e line 7-4 of Figure 1, parts of the structure being omitted;

Fi re 8 is a transverse sectional view on the hue 8-8 of Figure lcertain-parts of the construction being omitted for the urpose of showing the relation of a mgrlever to thenumeral wheel;

igure 9 is a detail view showing in side elevation certain parts of the mechanism including the carrying over or transfer devices;

Figure 10 is an elevational view looking toward the left of Figure 1;

Figure 11 is an elevational view showin a ortion of the transfer mechanism an -loo 'ngmina direction opposite to that in which gure 9 is taken; V

Figure 12 is a transversesectionalview of the numeral wheel and certain connec arts, and also showing the divisional plates tween the separate ups of numeral wheels and their actuating mechanisms;

Figure 13 is a view of the rear of a portion of the "maehine designed to show the relation of the'carrying over or transfer mechanism. to other parts of the structure; a Figure Leis a top plan view of a portion of one side of the machine including the canceling 'lever and connected parts;

Figure 15 is a side elevation of the same showing additional details of mnstruction;

ted

Fi 16 is an elevational view looking towafi he left in Figure 15;

Figure 17 is a. transverse sectional view of a portion of the machine showing certain parts of the addin mechanism indetail with certain parts 0% the mechanism removed;

Figure 18 is a view look toward the left in Figure 17, the numera wheel being broken away and shown artly in section;

Figure 19 is a longitudinal sectional view of a portion of the machine showin a rtion of the mechanism for locking t e eys and thereb showing when a. key has not been comp etely depressed; t

Figure 20 is alongitudinal sectional view of a portion of the machine showing in side elevation certain parts of the mechanism .for locking certain of the keys and thereby showing when'one of the keys has not been fully depressed;

Figure 21 is a top plan view of the same;

Fi re 22 is a transv'eme sectional view on the line 22-22 of Figure 20, looking toward the right (the part being omitted); and

Fi re 23 is an edge elevational view of' certain parts of the mechanism shown in more or less detail in Figures 20 to 22, depictingthe motion .of the ear or lug 138 to the division plates 1.

It will be understood that changes in the details of construction may be made within the scope of the claims without departing from my invention.

Before proceeding with a detailed def scription of the drawings, attention will be called to the fact that the outside casing with which adding machines are usually provided has been omitted from the drawmgs as the showing of such casing is not deemed to be in any way essential to an understanding of my invention. Also, instead of showing the machine as a whole, I have shown those views thereof which seem to me to be desirable for the purpose of enabling a clear understanding of my invention.

Referring now to the rawin 1 desig mites upright divisional plates w 'ich extend longitudinally of the machine and separate the mechanism associated with the respective denominational group: or columns of mechanism. 12 designates ey contact levers which are pivoted at their rear ends upon a rod 3 which extends transversely of the machine. One of these levers is associated with each group or column of mechanism employed in the operation of each numeral wheel. These levers extend toward the front of the machine, as shown, and are provided with raised portions 4 at intervals with which a shoulder 6 upon each of the keys 6 contacts when such keys are depressed I prefer to use but five keys in each column, as illustrated, because an operator can attain greater speed than where nine keys are provided in each column. The keys am;

guided at their upper end portions in the top plate 7 of the mac ine andat their lower end portions in brackets B'preferahly formed by cutting and bending out ortions of one of the division plates 1, as own in the drawmachine and are supported upon the side frame thereof and upon the longitudinal division plates 1.

Intcrposed between the stop bars 87 and the brackets 8 are coiled ap 10, the u per ends of which are connects ctively -to the lower ends of the keys 6, t e lower ends of the said rings resting in seats 11 formed upon th are 8'. When a key is depressed for thepurpose of actuating a lever 2 the associated spring 10 is compressed and by reason of its tendenc to expand to the normal position shown in igure 1 causes an upwardmo'vement oi the key to normal 'tion immediately upon the removal of t g foroe i'm 11 upon such key, as a result of whichu has been depressed. The-ends of the keys contact with the bars 8'. so; that the force, of a blow upon the keys iafabsorbedthereby and not by the various parts of the mechanism which is actuated 0r driven by thedepresion of such key. In this-way the jarring and racking of the operative parts of thenmechanism are very greatly reduced, if notentirely over-. come.

By reference to Figure 7, it will be observed that the front end portions. of the levers 2 are located in ofi-set positions with res -t to the rear end portions thereof an also out of vertical alinement with the front end portions of the segment levers 12 (sometimes called column actuators"), which are pivoted at the front of the ma chine upon a sleeve37 on a cross rod 13. This non-alinement is secured by the lateral bending of the said levers 2, as indicated at 14 in said Figure 7.

The levers 2.are respectivel connected with their cooperat segment levers 12 by means of parallel links 15, said links having detachable connection with the levers 2. The said links are spaced from each other by means of sleeves 15' for the purpose of facilitating the insertion, during the as sembling of the machine, of the said levers 2 through the space between the said links in order that the connecting bolts or rivets may be placed readily in the bearing seats between the downwardly projectin fingers 1G and 17 upon the lower edges of t c lovers 2. Those fingers project'at some length in order to prevent the displacement of the rivets'or bolts at the lower endsof the said except under extraordina conditions.

In case a lever 12 sho" d he accidentally or o'therwise depressed -independently of its lever 2, there would associated and cos be a possibility of ment of the lower end of the associated linkfromits seat between the rs. To prevent such displacement itowar the-rear, the rear finger; '17 is considerably lonpe'r thanthe front finger-116. Suchextra ength prevents the possibility of rearward displacement. Forward displacement of the-lower end of such link is prevented in the presence of a shoulder -1',on one o the adyaoent division plates, therebeing such a shoulder 11 on one of the said plates in each of the co arena.

The sleeves-or washers 15"e1a1gage with the said shoulder to prevent an cient forward motion of the lower end of a link to cause it to be displaced fr'om'its seat between the fingers 16 and 17. v

In order to-prevent lateral vibration of the levers 2 I have provided a downwardly projecting finger 18situa'tednear the front of the respective segment levers 12. which are also known aeifcolumn actuators. The front end portions of the levers 2 are situated between a finger 18 and the op sing cooperating keys 6. The relation 0 the said levers 2 to thesaid key 6 and thedownwardly'projecting fingers 18 is very clearly shown in Figure 4 o the drawings.

I The aocumulatingor numeral wheels 20, each having an elongated hub 22,' are revolubly sup orted upon a rod 23 extendihg transve y of the machine. -An outer annular portion of each of the wheels is socured upon an angular flange 21 formed upon said hub. R idl connected to the said hub and'in fixe re ation to each of the said numeral wheels is a toothed wheel 24,

the purpose ofwhich will'be hereinafter explained. Also rigid secured to each of the said hubs and in red relation thereto is an internal ratchet wheel 21? which is adapted to be engaged by a driving pawl 26 which is pressed outwardly into engagement with the internal teeth of the said ratchet 'wheel bv means of a spring 27. The driving pawl 26 is plrotally supported upon the rear end of a projection 28 from the gear segment 29 also pivoted upon the transverse rod 28. The segments 29 are each capable of pivotal movement. independently of the internal ratchet wheel 25.

30 designates a segment gear upon the rear end of each of the levers 12 which gear R in engagement with the gear 29. Upon do pression of a key 6 the shoulder thereof contacts with the corresponding raised portion 4 upon the coactiug lever 2 to cause a depression thereof. Such depression through the connecting link 15 causes :1 correspondthe piv ing depression of the'lever 12. By reason of the epgagdment of the segment gear 30 with 0' gear 29 depression of the lever 12 causes pivotal or revoluble movement of the gear 29 carrying the pawl 26 to the left and causing a eorres ending partial revolution of the ratchet w eel 25 and the parts connected therewith. It is desirable m;'operation that each of the keys be depressed through substantially e ual distances 'regardlesof whether the ey be a one, -a five or any intermediate value. This result is effected by properly proportioning the positions of the connections between the levers 2 and 12 in relation to their length and also by locating the shoulders 5 at ifferent distances above the upper edges of the raised portions 4 upon the levers 2.

The relative positions of these shoulders 5 with respect to the. u per edges of the levers 2 are very well in icated 1n Figure 1 of the drawings.

Upon release of a key 6 the segment levers 12 are returned to normal position, which is indicatedin Figure 1 of the drawings, by means of coiled springs 31 having connection respectively'at one endwith depending arms 32 which arms have connection with the front ends of the said levers 12. The other or rear end of each of the said s rings is hooked over a rod 32 as shown in igure 1 of the drawings. It is apparent that as a segment lever 12 is depressed pivotal movement in a forward direction of an arm 32 is caused which stretches the connected spring 31. The tendency of such spring to return to normal position causes a pivoted upward movement of the lever 12.

In order that a relatively wide bearing for the respective levers 12 may be provided,'I extend an integral portion thereof beyond the pivot rod 13 and bend the same laterally 'as' shown at 33 and then again downward? as shown at 34. The arm 32 is connecte to the extended portion 34 by means of rivets 35. The upper end of the arm 32 is pivoted at 36 upon the sleeve 37. The lever 12 and the upper end of'the arm 32 areseparated from each other by an enlariged portion of sleeve 37.

. ach of the numeral wheels is provided with two groups of numerals or denominational units extending from zero to 9.

'In order to revent reverse movement of the ra'tchet w eel 25 and the parts connected therewith during the operation of the machine, I have provided a lever 40 pivoted at its upper end upona rod 41. The lower end of the said lever 40 is bent laterally so as to extend interior-1y of the ratchet wheel 25 into position to engage the sides 42 of the internal teeth of said ratchet wheel and hold the said wheel against reverse rotation, that is, rotation clockwise in Figuie 1. As the saidratchet wheel is rotated in the opposite direction by. means of the driving pawl 26 arded asa pivoted In order to prevent the overrunning o the i accumulating wheels and the parts oonnected' g thereto, I have provided bars 48 one of which is associated with each column of keys as indicated. These-bars are provided with laterally rejecting lugs or ears 49 which have pivotal connectlon'with rods 50 supported 'upon the frame of the machine. The bars 48.

and rods 50" extend longitudinally of the machine, as illustrated.

At their rear ends-the said bars 48- are each provided with-a laterally extending arm 51 which is in contact with the rearwardly extendin arm52 of a lever 53 pivoted upon a rod extending-transverse y of the machine. The lever-s53 (one for each column) are held normally in positions somewhat forward of; theratchet. wheels 25 bymeans of coiled wire springs 56 having connection with the rear ends of the arms 52, as shown in various figures of. the drawings. The

arms 51 being in contact with the upper edges of the said arms 52 are also held up wardl byv said springs-so that the longituf dinal' ars 48-occupy angularpositions such as shown in Figure 4 of the drawings.

As any one of the keys in any one of the columns is depressed the lug 'or car 58 thereon contacts with the associated bar 48 to cause pivotal movement thereof. Such piv-,

otal movement also causes pivotal movemont of its laterally extended arm 61 which in turn causes pivotal movement of a lever 53 in a rearward direction so as tobring its upper end into position to engage the outer teeth 59 of the associated ratchet wheel'25. t-The POSitl0 l]8 0f these ears or lugs 58 upon the keys 6 are such that they contact with the bars 48 'ust asthe'keys are reaching the limit of t eir downward movement so that the upper end of the lever 53 is bro ht into position to engagethe ratchet he ial just at the proper moment and thereby, while permitting t to move forward the necessary distance; prevents over-running of the same due to the momentum iven to the parts, particularly during rapi operation.

Transfer or carrying-over owc lmu'm next denomination of a higher order. For

this purpose what is known as transfer or carrying-over mechanism is the transverserod-fla.

7 arm employed The transfer mechanism consists of a coiled wire spring 60 one portion of which is coiled around a part'of'the hub '22 situated inside of theilange 21,-o'ne end oflthe saidspring being connected to said hub. {The 0 end-of the-said ring'iscoiled around a portion of the brig 61 0f a'Qgear 62 and is connected to such hub. The said hub and gearfiland 62ers revolubly supported upon 63 a stop member integralwith thehub 61 and having a stopengagm shoulder 64;.which is adapted to engage wih stops 66 and 67 :uponthe ends'of an escapement lever 68 ,pivote'd upon a rod 70 extending transversely of the machine. It will be understood that one of these escapement levers is associated witheach of the'accumulating wheels.

In order to provide a wide bearin for the escapement lever 68, I have formed an extension thereon at its pivoted end and have bent thesame into. U-shape as'indicated at 71. Upon the ends of the arms of the said which are :adapted to engage a cam 73 formed upon the annular flange-21. It will be understood that as the hub 22 revolves the cam 73 will cause a oscillating pivotal movement of the escap'ement lever 68 so as to alternately move'one of the stop shoulders 66 and 67 outwardly to the stop 64 on the member 63 from whic ever of these stop shoulders it maybe in engagement and bring the other one of the said stop shoulders 66 and 67 into position to be engafed by the said stop 64. n the construction shown, the cam is so as to ali'ect'a shifting of the escapementevei-BS twice during each revolution of the hub 22 and an accumulating wheel 20 associated therewith. This l'bwiI! y reason of 'the fact that each of the sa'd wheels is provided with two groups of numorals or denominational numbers from zero. to 9 inclusive. Upon the disenga ment'of the stop 64 from one of the sto shoulders 66 or 67 the s rihg 60 which is under tension causes a an den movement of the stop member 63 and the gear 62 in a direction indicated by the arrow in Fi ure 11 a distance of half a revolution. 1o gear 62 is in en gement' with a gear revolubly mounte upon the transverse rod- 70. The number of teeth in the gear 80 is twice that of the teeth in the gear 69 so that a half revolution of the latter causes one quarter ofa revolution of the former.

Connected to the said gear 80 is a star wheel 81 having four arms which are adapted to engage the toothed wheel 24, one of which is associated with each of the accumulator wheels. The turning of the gear 80 through a quarter revolution causes a cone pr m , tact successivel movement of the said wheel and a consequent oneste forward movement of its associated accuin ating wheel 20.

Let us suppose that we have accumulated u n the accumulator wheel of theextreme right. hand column of the machine the amount or number 9 and. that we then add to such number the additional number 5 makin a total of 14. In adding this the 5 key in the said right hand column is depressed. The depression of'such key causes a revolution of the numeral wheel in such column so as to bring a 4 upon such numeral wheel into proper position and'during such revolution one of thc'stops upon the adjacent escapement lever 68 is disengaged from the stop upon the revoluble stop member 63 so that the gear 62 is permitted to move (at the roper time as hereinafter explained) the istance of one-half a revolution, thereby causin a quarter revolution of the gear which IS in engagement therewith aud a consequent quarter revolution of the four-pointed star wheel 81 associated therewith and with the column of next higher denomination. One of the points of such star-wheel engaging with a tooth upon the toothed wheel 24 of such column ofhigher denomination causes a partial revolution thereof through a single step so as to bring a number 1 upon such wheel into registry with the sight open ng through which the numbers upon the accumulating wheels 20am seen through the outside casing of the machine. In order to revent such accumulating wheel of higher cnomination from moving a greater distance than the one step as desired, 1 have provided the stop lever 85 having a lateral projection at its outer end which is adapted to be thrown down into position between two of the teeth upon the said wheel 24. The said lever is pivoted upon the transverse rod 41. Integral with the said lever is a depending arm 87 which is adapted to be engaged by one. of the arms of the four-pointed star wheel 81 at the proper instant to throw the said lever 85 downwardly into position to engage the teeth of the said toothed wheel 24 to prevent overrunning of the same and thus accumulating an incorrect amount. The outer forward end of the lever 85 is held upwardly in the normal position shown in Figures 1 andl? of the drawings by means ofa coiled wire spring 88 ha\'in; connection with a rcarwardly extending arm 89 also shown in Figures 1 and 17. To limit the movement of the said lever 85 under the influence of the spring 89. I have provided a lug or ear 86 thereon which is adapted to engage the spacer 86'.

Umwclin-g mechanism.

It frequently becomes necessary to clear the machine, that is, to cause revolution of the accumulator wheels from such positions as they may occupy to positions in which the zeros thereon are in view. thus canceling from the accumulator wheels any amount which may have been accumulated thereon.

The mechanism which I have provided for this purpose comprises a transversely extending flat bar 90, with rounded edges, situated at the rear of the machine and having connection at its ri ht hand end with a canceling lever 91. aid bar 90 is supported in slots 91 in the division plates 1, the said slots being sha ed so as'to permit the necessary pivotamovement of the said bar.

The liar 90 and the canceling lever 91 are held in the positions shown in Figure 1:) by means of a spring 92 having enga cment with a dmmwardly and forwar ly extending arm 93. The 0 posite end of the said spring is connected with any other portion of the machine. The said bar 90 is in engagement with a )lurality of lever arms 94 and 95 associated with each denominational group of mechanism, which lever arms are pivoted upon a transverse bar 96.

ings.

It will be understood, however, that these lever arms 94 and 95 may be separate members pivoted n on the rod 96. It will be observed that t c arm 94 is rovided with a. rearwardly and downwardly extendin hook-like projection 98 (see Figure 1) and that the front side of the transverse bar 90 rests against a shoulder or sent 99 formed upon the said lever arm 9-1 as shown in the drawings.

The lever arm 94 is longer than the arm 95, as will appear from an examination of Figures 1 and 15. and at its upper end is provided with an inwardly and laterally extending projection which is adapted to engage the in 26 on the driving pawl 26 to cause its isengagemcnt from the internal teeth of the ratchet wheel 25. This occurs when the canceling lever 9l is depressed so as lo cause movement of the lever arms 94 and 95 forwardly about their pivot rod 96.

The lever arm 94 is also provided with a laterally cxtendinglng or car 100 which is adapted to engage with a finger 101 )rojecting from the ratchet wheel holding lever 4" vll and causing pivotal movement of the said lever 40 so as to disc e the outer free end of the same from t e'internal teeth of the ratchet wheel 25. Such ratchet wheel together with the accumulator wheel 20 and the toothed wheel 24am then free to rotate in a reverse direction until the zeros on such numeral wheels have reached, itions' in alinement with the sight openings. The reverse rotation is stop ed at such times by reason of the contact 0 one of the l or ears 105 upon thetoothed wheel 24 wit the upper inwardly extended end 106 of the lever arm 95. There-are two of these lugs 0r ears 105 situated diametrically opposite from each other. The lever arm 94 is provided with an upwardly extending projection 108 havin a laterally extending car 109 thereon with'which a rearwardly extendin stop arm 110 contacts whereby the war ivotal movement of the ratchet w eel ho ding arm. or pawl 40 is limited. Forwardmovement of the lever arms 94 and 95 is limited by the contact of a stop projection 111 thereon with the frame of the machine.

The reverse movement of the several accumulator wheels and their connected parts upon the hub 22 are caused by the spring 60 heretofore described. The springs are at all times under sufiicient tension to cause a reverse movement of rotation of the accumulator wheels associated with the respective springs to positions in which a zero is in register with the sight opening. It will be noticed that each of these springsserves' a double function, namely, the effecting of the carrying-over o ration as hereinbefore described and in ad ition thereto the reverse rotative movement of the respective numeral wheels and the parts connected thereto on the respective hubs 22, also previously described. 7 i

It, will be noted that the canceling operation of the machine is efiected very simply and readily merelyby the depression of the canceling lever 91, such lever being returned and held in' normal position by the operation of the coiled spring 92 having engagement with the lever arm 93.

Dupleadng mechanism.

In machines (if this character, as is well known, there is a liability to add incorrectly in case two keys in adjoining columns are struck by the operator at the same time unless some means is provided for delaying the operation of the transfer or carrying-over mechanism from a column of lower to the next column of higher denomination until after the stroke of the key has been completed.

If the carrying-over were affected durlng the rotation of the numeral wheels due to the depression of the keys the amount carpose of preventing such carrying-over while the accumulator wheels are being-rotated by the depression of the keys, I have provided an arm 115 pivoted upon the cross rod 54. The said arm is provided with a cam roll 116 which is situated in the cam slot 117. The upper end of the lever is provided with a projection 120 which is adapted to be moved into position by meansof the cam slot 117 to be en aged b the opposite ,end of the revolub e mem er 63 and to prevent rotation thereof and thus prevent the carrying-over operation until after the completlon of the hey stroke;

Upon refereuceto Fi e 9 it will be noted that the shape of t e camslot 117 is such that when. a gear as cut lever is in normal elevated position he cam roll 116 is situated in the lower forwardly extended end portion of the said slot. The arm 115 is thus held in such position that its 11' per end is out of the ath of movement 0 the opposite ends 65 o the revoluble member 63 which is a part of the transfer mechanism. When. however, a lever 12 is depressed the cam slot 117 being in engagementwith the cam roll 116 causes a rearward pivotal movement of the arm 115 so that its upper end is carried into the nth of movement of one of the ends 65 of tie revoluble member 63, as heretofore stated.

In case the operator in striking a key should fail to depress it to the full extent as he should, it is desirable that some means should be provided which would indicate such failure and which also would prevent the depression of other keys in the same column until after such key has been depressed to its full extent as it should be;

I have provided such mechanism and will now describe the same, referringparticularly to Figures 1 and 19 to.23.

The rear ends of the segment levers 12 are each provided with a rearward] extending portion 130 having shoulders 1 1, 132, 138 and 134 formed in its rear edge.

The lower edge of each projecting portion 130 is provided with a rearwardly extendin contact lug 135 which projects beyond the line of the outer rear edges of the shoulders 131-134. The rear endof the contact lug 185 is normally in engagement with a lateral projection or lu 138 extending from the side of the lower end portion of a lever 139 pivoted upon a pivot 140 secured upon the inner front end of a lever 141 pivoted upon the cross rod 96. The said lever 139 is provided with an upwardly extending pro ecting finger 145 with which one end of a i 15 adapted to engage with the ear or lug 151 upon the lower end of thelever 139. The ear or lug 151 extends in a. direction oppo- .site to that of the projection 138. Theem agement of the hook or shoulder150 with t e ear or In 151'occurs as the key reaches the limit of its downward movement and as the depressed ar segment lever 12 reaches the limit of its downward movement. It will be recalled that the lever' 53 of any column is moved rearwardly about its pivot rod 54 during the completion of the down ward movement of any depressed key in said column. The rear end 1 4 of the finger lfifi, which is integral with the lever 53, contacts with a cam projection 160 formed upon and bent to a. position laterally of the main body of the pivoted lever 139 and causes rearward pivotal movement of the said 1e vcr so that the hook or shoulder 150 upon the arm 149 may engage with the ear or ug 151, and hold the lever 139 in rearward position so that the projection or lug 138 thereon is not in 'tion to engage with the shoulders 131-15225 the latter are moved upwardly. Such hook or shoulder 150 remains in engagement with such ear or lug 151 until the segment lever returns to its normal elevated position. At this time an ear or lug 161 upon the lower rear end of the projection 13o engages the forward end of the arm 14!) and causes movement of the same together with the integral arm 147 about the nvot rod 148 to disenga the shoulder 150 mm the pro jection 15 and thereby permit the spring 146 to cause pivotal movement of the lover 139 so as to bring the pro'ection or lug 11-18 again into contact wit projection 135.

It will be observed that the said projection 138 extends through an irregularly shaped angular o ening 162 formed in one of the ad acent vision plates 1. When the ment lever is in elevated normal position, as shown, for instance in Figure 19. the pro- 'ection 138 is situated between the contact u 135 and the rear edge of the opening 162. being also situated underneath the lower edge of a shoulder 163 at the upper edge of the said opening. The said shoulder-extends only partlally forward across the said opening so that the said opening is provulcd In effect with an extension 164 into which the projection 138 may be moved as will be here e contact lug or inafter explained. Normally, lmwvvrr. du-

said projection is situated helomthr said ortension 164 of the opening. being lu-ld m such position by means of a spring 56 which is connected to the lever 141 and to the rear end of the projection 52 and by the contact lug 135. It will'be understood that this mechanism is duplicated in each column.

In the operation of the machine the seg mcnt lever 12 of each denominational group or column is permitted to return upwardly to normal position after havingbeen depressed through the full extent of its movement by reason of the fact that the shoulder 150 which has engaged the projection 151 holds the lever 139 in a rearward position during such upward movement of the segment lever.

In case a key in any column is only partially depressed it will be remembered that the car or lug 58 thereon will not contact with the adjacent bar 4.8 and that in consequence the arm 51 upon the said bar will remain stationary thus preventing actuation of the arm 52. The said arm 52 remaining stationary, it is apparent that the lever arm .13 to which the $111116. is connected will also remain stationary. In other words, unless pivotal movement of the bar 48 is caused by contact of an ear or lug 58 upon a key tho levcr arm 53 will not be actuated. Tlic result will be that the contact lug or projection 135 having been moved to a position below the lateral projection 138 near the lower end of the lover 139 such lever will be released and will be moved forward by the action of the spring 140 so that the lower edge of the projection 138 will lie swung forward into position to engage one of the shoulders 13%, 13:1. 132 or 131. depending upon the distance through which the key was depressed. The engagement of: any one of these shoulders will: said projection would prevent the return to normal position of the partially depressed segment lever. Such engagement. however. docs oll'ect u sullicicnt upward movement of the lover 1-11 in opposition to the action of the spring 56 to disengage the shoulder or hook 170 on said level 1-11 from n laterally extended portion 171 upon the rrur end of the slidublc lock bar 172, roll-using the latter and thereby permitting it to more forwnri'lly under the inilu cncr of the spring 1711. The said bar 172 is provided with laterally extruded flanges 1T1 situated at intervals upon its lower edge. Whom the said bar 17; mun-s forwardly such llangos pars underneath the lill'a 58 upon the undrprcascd kc): and above tlic our 5H upon tludepressed l l' The uiulrprossod keys are tlu-rcby prevented from lasing depressed until after the parts have u. .-at11lu(l normal msitiun, while tho partially depressed key is prevented from rising by the contact of l'llu upprr edge (if the our 58 tlirrcou will the underneath side of nmuf'lllt flanges 171.

Thu. artially drprrs'scd kc cannot return to normal position until after it has. been completely depressed and the correct numher thereby acciunulated upon the proper accumulating Wheel.

At the time that the lever 141 is slightly raised as above stated. the projection 138 mores upwardly into the extended portion or notch 164.

The laterally extended portion 171 upon the rear ends of the bars 172 is provided with a forwardly extending projection 175 which occupies an opening 176 in a projecting lug 177 formed by cutting and bending out a portion of one of the divisional plates 1 which separate the groups of denominational mechanism. When. after an error such as above described, a key is fully depresed so as to cause apirotal movement of the stop arm 53 in the manner hcreinbefore describedthe forward edge of the latter engages a lateral stop projection 179 upon the bar 172 and pushes it backward to normal position, allowing the hook or shoulder 170 on lever 141 to enga e the part 171,

As a further means oi indicating to the operator that he has failed to depress a key to its fullest extent as he should have done. I have provided means for ringing a bell 180 located at the rear end of each denominationnl group or column of mechanism. This means comprises a hooker arm 181 which is integral with an upright arm 1B2 pivoted upon the cross rod 32'. The upper end of the said arm is provided with a lug or car 183 which is adapted to be engaged by a downwardly extending lug or car 184 u on the lower edge of a locking bar 172. li en the shoulder or hook 170 is disengaged from the laterall extended-portion 171 as above described. 1: e locking bar 172 is pulled forward suddenly, thereby causing the down' \vardly extending lug or car 184 to strike the upper end of the lever arm 182 and cause the knocker arm to strike a'n asociated bell and ring the 'same. When the parts have returned to normal position after the key has been depressed to its full extent. the weight of the knocker arm 181 causes the lever arm 182 to return to normal position.

Resetting mcllmu'am.

In handling the machine forshipping purposes or otherwise, the probabilities are that the segment levels 12 would become depressed to a greater or less extent. in other words, partial movements of the and levers will be effected even-though the operator has not depressed a key. Such partial movements would occasion the locking 191 extending upwardly from each of the locking levers 139. I also project forwardly and downwardly from the lower ends of the said lever-arms 94 rcsettin arms 195 adapted to engage shoulders 19 intermediate the ends of the knocker arms 181.

It will be understood that when the canceling lever 91 is depressed the lever-arm 94 is turned about its pivot. At such time the inner ends ofthe fingers 190 engage the tripping fingers 191 to cause pivotal tripping movement of the levers 139 to thereby disengage the projection 130 at the rear end of the segment lever 12. At the same time the lateral projections 196 upon the resettin arms 195 enga the shouldels 197 eitier upon one or a of the knocker arms (dependln upon whether one or all of them have been 'fted by the action of the locking bars 172 thereon) to return the same to normal position, thus causin the projections at the upper ends of the ever-arms 182 to contact with the lugs 184 and return the locking bars to normal position to release the keys which have been locked thereby.

It will be understood that although the singular number is employed in describing certain parts of the mechanism of a column, such. parts are duplicated in the different denominational groups of mechanism.

claim 1. In a computing machine, the combination of a key actuated lever. said lever having fingers depending from its lower edge, a column'actuetor and a link consisting of members situated upon the opposite sides of the said actuator and the said key actuated lever, the lower ends of the said members embracing the said lever, and the means connecting the said lower ends being seated between the said depending fingers.

2. In a computin machine, the combi nation of a series 0 keys, a lever adapted to be actuated by the said keys. means cooperating with said keys for preventin lateral movement of the said key actuate lever, a. column actuator, a connection between the said key actuated lever and the said column actuator, and a numeral wheel adapted to be actuated by the said column actuator.

3. In a computing machine, the combination of a. series of he s, a lever adapted to be actuated directly by the said keys, a column actuator, means arranged in parallel relation to the said series of keys upon the opposite side of the said key actuated lever from the said keys and cooperating with the latter to prevent lateral movement of said key actuated lever, a connection be tween the said key actuated lever and the said column actuator, and a numcrul wheel adapted to be actuated by the said column actuator.

4. in a computing machine, the combination of a. pivoted lever, a. series of keys each of which is adapted to contact with the said lever to cause pivotal movement thereof, a column actuator having an arm depending therefrom upon the opposite side of the said lever from the said series of keys and preventing lateral movement of thesaid lever, and a connection between the said lever and the said column actuator.

5' In a computing machine, the combination of a lever pivoted at its rear end, a seriesof keys having shoulders adapted to contact with the forward end portion of the said lever to cause pivotal movement thereof, a column actuator pivoted at its front end, a link connected to. the-said lever near its center, and a finger depending downwardly from the said column actuator near its front end, such finger being located upon the opposite side of the 'front end portion of the said lever from the said series of keys,

whereby the said [even is' held between the said finger and the said keys and prevented from movinglaterally.

G. In a computin machine, the combination of a series of eys, a lever adapted to be actuated byeach of the said keys, the said lever being provided with downwardly extending fingers spaced from each other, the rear finger being of greater length than the front finger, a column actuator. and a link having its lower end provided with a 'ournal seated between the said fingers and having its upper end pivotally connected "to the said column actuator.

7. In a computing machine. the combination of a series of he's, a pivoted lever adapted to be actuated y each of the said keys, the said lever being provided with deiending fingers, a column actuator, a link having pivotal connection at its u per end with the said column actuator and ts lower end being provided with a journal seated between the said fin ers, the rear finger being of greater lengt than the front finger to prevent rearward displacement of the lower end of the said link, and means independent of the said lever for preventing forward displacement of the lower end of and link.

8. In a computin machine, the combination of a. series of ys, a lever pivoted at its rear end and adapted to be actuated by.

to be actuated by the said column actuator.

9. In a computing machine, the combination of a numeral wheel, a series of keys,

means intermediate the said wheel and the said keys for actuating the said wheel. a pivoted bar arranged in parallel relation to said keys and adapted to be actuated thereby, the said bar havin a laterally extended linger. and a lever at apted to be actuated by the said finger and moved into position to prevent over-rotation of the said numeral wheel when the same is actuated by the depression of any one of the keys of the said series.

[0. In a computing machine. the combination of a numeral wheel, a ratchet wheel having rigid connection therewith, a series of keys. and means intermediate said keys and the said numeral wheel for actuating the latter u 10!] the depremion of any one of the said eys, a pivoted bar extending longitudinally of the machine and arranged in parallel relation to the said series of keys.

each of the said keys being provided withmeans for causing pivotal movement of the said bar when such kcv is depressed. the said bar having a laterally extending finger and a ivoted lever actuated by the said tinger wien the said bar is moved about its pivot to engage the said ratchet wheel to prevent over-rotation of the said numeral wheel.

11. In a computing machine, the combination of a numeral wheel. a ratchet wheel having rigid connection with the said numeral wheel, a lever arm adapted to engage the said ratchet wheel, the said lever arm having an arm extendinp rearwardly from its lower end, means for holding the said lever arm normally out of engagement with the said ratchet wheel, a series of keys. means intermediate the said keys and the said numeral wheel for actuating the latter, a pivoted bar, means upon each of the said keys for causing pivotal movement of the seal bar when any key is de iressed, the said bar having means connectm thereto for engagement with the said rearwardly extending arm to cause pivotal movement of the said lever-arm into engagement with the said ratchet wheel to prevent over-rotation of the said numeral wheel.

12. In a. computing machine. the combination of a numeral wheel, means-for actuat ing the same a numeral wheel of higher denomination situated adjacent thereto, a revoluble stop member, a motor spring having, connection with the numeral wheel of lower denomination and with the said revoluble sto) member, a pivoted two-armed release an stop device having its arms situated upon the opposite sides of the said revolnhle stop member, the stops upon the said arms bein adapted to be alternately engaged by he said revoluble stop member, a cam upon the said numeral wheel of lower denomination for causing movement of the said pivoted stop member to cause alternat ing engagement and disengagement of the said revoluble stop member therewith, and

means intermediate the said revoluble stop member .and the numeral wheel of higher denomination to cause a one-step revolution of the latter upon the releasing of said revoluble stop member.

13. In a computing machine, the combination of a numeral wheel of lower denomination, means for actuatin the said numeral wheel, a numeral wheel 0 higher denomination, toothed wheels having rigid connection with the said numeral wheels, a revoluble stop member, a motor sprin having connection with the said numeral wheel of lower denomination and with the said revoluble stop member, means including a cam whose face is adapted to operate a two-armed release, the arms of which operate alternately for releasing the said revoluble stop memher and permitting the said 5 ring to cause actuation thereof, a star whee having operative connection with the said revoluble member, the said star wheel being adapted to engage the toothed wheel associated with the numeral wheel of higher order and cause a one-step rotation thereof upon the release of the said motor spring.

14. In a computin machine, the combination of a numeral w ieel of lower denomination, meansfor actuating the same, a numeral wheel of higher denomination, toothed wheels having rigid connection with the respective numeral wheels, a gear in axial a inement with the said numeral wheels and having a stop member thereon, a motor spring having connection with the said numeral wheel of lower denomination and with the said gear wheel, the said motor spring being adapted to be placed under tension by the said numeral wheel of lower denomination, an escapement lever for engaging and disengagin the said stop member to permit successive half revolutions of the said ear wheel, a cam upon the numeral whee of lower denomination for operating the said escapement lever, a second gear with which the first-named ar is in engagement, the said second gear aving twice as many teeth as the first-named gear, whereby a half revolution of the latter causes a quarter revolution of the former, a star wheel havin connection with the said second gear and ing in ulinement with the toothed wheel associated with the numeral wheel of higher denomination and adapted to engage the same during each of its quarter revolutions to cause a one-step movement thereof and of the numeral wheel of higher denomination to effect a transfer or carrying over from the numeral wheel of lower to the numeral wheel of higher denomination.

15. In a computin machine, the combination of a numeral wiieel of lower denomination, means for actuating the same, a numeral wheel of higher denomination, toothed wheels associated with the respective nuthe said spring,

-tion of a numeral w during each meral wheels, :1 motor spring adapted to be placed under tension by the numeral wheel of lower denomination, mechanism interme diate the said spring and the numeral wheel of higher denomination, means mociated with the numeral wheel of lower denomination for successively releasin the said s ring, the said intermediate mecianism inc uding'a four-pointed wheel adapted to be turned through a distance of one-quarter revolution during each period of release of and one of the points of the said wheel enga a tooth upon the toothed wheel associate with the numeral wheel of higher denomination, to cause a one-step rt tation of the said toothed wheel and its associated numeral wheel.

16. In a comput' machine, the combineeei of lower denomination, means for actuatiiig" the same, a numeral wheel of hi her denomination, toothed wheels associated with the respective numeral wheels, a motor spring adapted to he placed under tension by the numeral wheel of lower denomination, mechanism intermediate the said spring and the numeral wheel of higher denomination, means associated with the numeral wheel of lower denomination for successively releasing the said spring, the saidintermediate mechanism including a four-pointed wheel adapted to be turned through a distance of oneuarter revolution riod of re ease of the said spring. one 0 the points of the said wheel engaging a tooth upon the toothed wheel associated with the numeral wheel of higher denomination, to cause a onestep rotation of the said toothed wheel and'itaassociated numeral wheel. a pivoted lever for engaging the said toothedwheel, the said lever having an arm extended beyond its pivot and adapted to be engaged bv another arm of the said four-pointed whee such engagement cans ing movement of the said lever into engagement with the said toothed wheel simultaneously with its actuation to prevent overrunning of the said numeral wheel of higher denominatiom 17. In a computing machine, the combination of a numeral wheel of lower denomination, a column actuator therefor, the said actuator having a crooked slot therein, a numeral wheel of higher denomination, transfer mechanism inter between the said numeral wheels of ower and higher denominations, and a lever-arm actuated and controlled by the said slot for preventing operation of the said transfer mecha nism until after the said column actuator has com )leted the actuation of the said numeral w eel of lower denomination.

18. In a computing machine. the combination of a numeral wheel of lower denomination, a column actuator therefor having a cam slot therein, a numeral wheel of higher denomination, transfer mechanism interposed between the said numeral wheels of lower and higher denomination for effecting a transfer or carrying over from the column of lower to higher denomination, the said mechanism including a motor spring adapted to be placed under tension by the numeral wheel of lower denomination, means associated with the said numeral wheel of lower denomination for releasing the said spring, and means actuated by-- the said cam slot for preventing the operation of the said spring after having been releaseduntil the completion of the actuation of the said numeral wheel of lower denomination.

'19. In a computing machine, the combination of a numeral wheel of lower denomination, a column actuator therefor having a cam slot therein ad'acent to its rear end, a numeral wheel 0 higher denomination, transfer mechanism inter sed between the said numeral wheels'of ower and higher denominations, the said mechanism including a revoluble member having a stop thereon and being also provided with pro ectmns, a motor spring having connection w th the said numeral wheel of lower denomination and with the said revoluble member, an esthe said numeral wheel of lower denominaa the accumulating operation of the numera wheels. 20. In a computing machine, the combination of numeral wheels. internal ratchet wheels having connection respectively with the said numeral wheels. column actuators,

driving pawls adapted to engage the internal teeth of the said ratchet wheels and to be driven by the said column actuators to cause forward revolution of the said numeral wheels, a holding pawl in engagement with the teeth of the said ratchet wheel and normally acting to prevent reverse revoluble movement thereof, pivoted lever-arms, means for causing ivotal movement of the said lever arms to isconnect thesaid pawls from the said ratchet wheels, and the said lever --armshaving means for causing dis engagement of the said holding pawls from the said ratchet wheels, motor springs under tension for causing reverse revoluble movement of the said numeral wheels upon the releasing of the said driving and holding pan'is, and means for limiting the reverse revoluble movement of said numeral wheels.

21. In a computin machine, the combination of a series 0 keys, a column actuator, a numeral wheel, ineans interposed between the said column actuator and the said numeral wheel to cause revoluhlc movement of the latter upon movement of the said column actuator in one direction, a holding paw] normally holding the said numeral wheel against reverse revoluhle movement, a locking bar 'for locking the said keys against depression in case a column actuator has been partially. depressed. and means for disconnecting the said numeral. wheel from the said column actuator and releasing the said holding pawl to permit reverse revoluble movement of the said numeral wheel and simultaneously moving said locking.' bar to unlocking position.

22. In a, computing machine, the combination of a plurality of series of keys. column actuators, numeral wheels, means interposed hct-ween the respective numeral wheels and columnv actuators whereby movement of the latter in one direction causes re-voluble movement of the said numeral wheels, means for holding the said numeral wheels against reverse revolubie movement. locking bars associated with the respective series of keys,.means for retaining the said locking bars in normally unlocking position, means for releasing the said retaining: means by return movements of the said column actuators after only a partial depression thereof. means for causing movement of the said locking bars into locking position with respect to the keys. means for returning the said locking bars to unlocking position. and means for disconnecting the said column actuators from the said numeral wheels and releasing: the holding means for said numeral wheels to permit reverse revoluble movement thereof and for simultaneously actuating the means for returning the said locking bars to unlocking position.

' 23. In a computing machine, the combination of a series of keys, a column actuator. a numeral wheel adapted to be actuated by the said column actuator, means for preventing said numeral wheel from over-running, a locking bar, a spring-pressed lever for bolding the said locking bar in normally unlocking position, a pivoted member supported upon the said lever, means upon the said column actuator for engaging the said member u on upward movement after only a partia depression to effect pivotal movement of the said lever to release the said locking bar, means actuated by the complete depression of a key, to cause pivotal movement of the said member out of position to be engaged by the said means upon the said column actuator, and means for retaining toothed wheel attached to said numeral wheel of next higher denomination, a star wheel normally out of engagement with said toothed wheel and means for engaging said star wheel with saidtoo thed wheel so as to cause a one step rotation of said numeral wheel of next higher denomination.

2-5. In combination, an adding mechanism,

a column actuator and a series of manually operated keys forming part thereof, a rac integral with said column actuator, a pawl enga in said rack, said pawl being pivoted to a ate 1 which normally holds a key locking bar in unlockin position, means whereby the action of said rack and pawl unlocks said key locking bar when any of said keys are not de ressed to their fullest extent and locks all tiie keys against depression except that one which was partially depressed, and means for returning said key lockin bar to its unlocking position when the partially depressed bar is fully depressed.

26. In combination, an adding mechanism comprising a series of keys, a lever actuated thereby and a numeral wheel rotated by said lever, means for preventing said numeral wheel from over-runnin a. rack integralwith said lever, a bar a opted to lock said series of ke s at certain times, a latch for holding sai lock bar in its unlockin position, a pawl pivoted to said late 1 and adapted to slip over theteeth of said rack on the down stroke of said lever but which is engaged by said rack to release said latch from said lock bar and release the same when said lever is not actuated to the full extent of the key depressed, a second latch pivoted on said first named latch for holdmg said pawl out of engagement with said rack on the upward stroke of said leverafter said lever has been depressed to the full extent of the number on the key depressed, means integral with said means to prevent over-running for rotatin said pawl to where it is held by said second atch and means for releasing said second latch from said pawl when said lever is at the last part of its up stroke to allow said pawl once more to get into engagement with said rack on said lever.

27. In combination, an adding mechanism comprising a series of keys, a numeral wheel, means for preventing said numeral wheel from over-running and means intermediate said keys and said numeral wheel for addin the amount on the key onto said numera wheel, ratchet teeth forming part of said intermediate means, a pawl adapted to engage said ratchet, said pawl being mounted on a latch adapted to engage a lock bar which is capable of locking said keys when pne of them is incorrectly operated and hold said lock bar in unlocking position, a second latch mounted. on said first named latch and adapted to hold said pawl out of en agement with said rack on the idle stroke of said intermediate means, and means actuated by said means for preventing over-running of I said numeral wheel for returning said locking bar to its unlocking position after it has been unlockedvby said first named latch.

In testimony that I claim the foregoing as my invention, I have hereunto signed my name this 14th day of April, A. D. 1913.

ANDRE KORONSKI.

In the presence of- Gamma E. Knnmrsnnaa, Geo. M. Hmmr. 

